參數(shù)資料
型號(hào): 74LCX573BQX
廠商: Fairchild Semiconductor
文件頁(yè)數(shù): 3/14頁(yè)
文件大?。?/td> 0K
描述: IC LATCH LV OCTAL 5V I O 20-DQFN
標(biāo)準(zhǔn)包裝: 3,000
系列: 74LCX
邏輯類型: D 型透明鎖存器
電路: 8:8
輸出類型: 三態(tài)
電源電壓: 2 V ~ 3.6 V
獨(dú)立電路: 1
延遲時(shí)間 - 傳輸: 1.5ns
輸出電流高,低: 24mA,24mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-WQFN 裸露焊盤,20-DQFN
供應(yīng)商設(shè)備封裝: 20-DQFN
包裝: 帶卷 (TR)
74LV4020_1
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 29 November 2005
11 of 20
Philips Semiconductors
74LV4020
14-stage binary ripple counter
[1]
Typical values are measured at nominal VCC and Tamb = 25 °C.
[2]
CPD is used to determine the dynamic power dissipation (PD in W).
PD =CPD × VCC2 × fi × N+ Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
Σ(C
L × VCC
2
× f
o) = sum of the outputs.
tW
pulse width
CP (HIGH and LOW)
VCC = 2.0 V
41
-
ns
VCC = 2.7 V
30
-
ns
VCC = 3.0 V to 3.6 V
24
-
ns
VCC = 4.5 V to 5.5 V
18
-
ns
MR (HIGH)
VCC = 2.0 V
41
-
ns
VCC = 2.7 V
30
-
ns
VCC = 3.0 V to 3.6 V
24
-
ns
VCC = 4.5 V to 5.5 V
18
-
ns
trec
recovery time
MR to CP
VCC = 1.2 V
---ns
VCC = 2.0 V
26
-
ns
VCC = 2.7 V
19
-
ns
VCC = 3.0 V to 3.6 V
15
-
ns
VCC = 4.5 V to 5.5 V
12
-
ns
fmax
maximum input clock frequency
VCC = 2.0 V
12
-
MHz
VCC = 2.7 V
16
-
MHz
VCC = 3.0 V to 3.6 V
20
-
MHz
VCC = 4.5 V to 5.5 V
30
-
MHz
Table 8:
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF; for test circuit see Figure 9.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
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